[GreenKeys] Model 15 + C-64 Baud rate question

[drlegendre .]

@Ralph & All

You're right, I hadn't gotten as far as 5 bit vs. 8 bit ASCII (or PETSCII)
- but don't the hi-end terminal progs for C-64 have configurable options
for this? Selections for data bits, stops bits, parity, are fairly standard
I +think+.

But as far as baud rate settings go, isn't that a limitation of the 64
KERNEL routine, rather than some hardware limitation? IIRC, the 64 doesn't
use a dedicated UART the way most RS-232 implementations do. The User Port
where serial comms are handled is controlled by one of the 6526 CIA chips.
If it comes down to it, I assume I'd have to write my own routines to
handle this stuff.

I can't see why it should be very difficult, at least to handle one-way
(printing) on the TTY side. Unless there's some lack of access (or speed is
actually an issue), it could be done in BASIC as the transmission rate is
so slow, even BASIC will probably need timing loops between bits.

Make sense?

On Sat, Jul 4, 2015 at 4:36 PM, Ralph Mowery <rmowery28146 at earthlink.net>
wrote:

>  Are you forgetting that the 15 is Baudot (5 level) and the C-64 is going
> to be ASCII or (8 level) ?
>
> As to the range finder, it is not a speed setting.
>
> As to the adjusting have a good copy on the RYs as sent and adjust it one
> way to the point th eRYs are not printing correctly, note that number, then
> go the other way and do the same thing.  Substract the smaller number from
> the larger one and device it by 2.  Then add it to the smaller number.
> That is where you set the ranger finder.
>  In other words set it halfway between the two numbers.
>
>
> ----- Original Message -----
> *From:* drlegendre . <drlegendre at gmail.com>
> *To:* tony.podrasky <tony.podrasky at gmail.com>
> *Cc:* Green Keys <GreenKeys at mailman.qth.net>
> *Sent:* Saturday, July 04, 2015 5:06 PM
> *Subject:* Re: [GreenKeys] Model 15 + C-64 Baud rate question
>
>  @Tony
>
> Ok, so even if the unit is set at spec (45.45) I can use the 50 baud
> setting on the C-64 side, so long as I add a timing delay between each
> successive char?
>
> @All
>
> Also, I've been trying to find info on the Range Finder - what is is, how
> it works, now it's adjusted, etc. but I've come up dry. I can't even find a
> section on it in the 138 pp. manual I found. What is that thing for?
>
>
>
>
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